. "Most Common Grammatical Mistakes Made in English by L1 Arabic LearnersRobert Lado (1957), as well as most contrastive linguists, have shown that the learner's first language may have a big role to play in the process of second language learning. Due to di", مجلة بحوث اللغات, 2, 4, 2023, 49-62. doi: 10.25130/jls.2.4.3